The system creates a separate post processing record for every error which occurs during the backflushing of components or when posting the goods receipt. This is an individual document with document items for the individual materials. The individual postprocessing document is also referenced in the backflush document of the production backflush. Every individual document contains the date of the backflush. When postprocessing, the system creates a material document for each date, listing the postprocessing items.

Normally when you're accounting for work in progress you record costs associated with production as you incur them. Backflushing is when you record your costs retroactively, after finishing a project or run of production.